window operator



"vention relates to improvements in window operators. r

'fj lt is well known that most people living in id ellings, apartments and hotels keep the winflows night even during the winter; Hotel and apartfink-int owners usually turn off. the heat at night 'to'conserve coal and turnit on in'the morning 'in ti'rne to raise the temperature of the rooms to comfortable degree by the time the tenants and guests usually arisen Where'thewindows 'are open, the cold air thus admitted consumes the heat and makes it practically impossible toraise the temperature and as "a result much "coal or other fuel is wasted. J r I;t' is obvious that if all of the" windows were closed at or before the heat is turned on in the morning a large amount of fuel would be saved. Itgis the object of this invention. to provide means for operating the windows so that they may be manually adjusted-by the tenant or guest and hold securely in adjustedposition and which, at the same time, permits all of the open windows to be simultaneously closed by the building engineer, or by a clock controlled switch; Te'nants -and owners 'of small residences also 'nnu this control device useful as by this means the bedroom and other windows will automatical- "ly'close at any predetermined time which assures when it is time to that the room will be warm arise.

The above and any other objects that may beto their bedrooms open, or'p'artly open, at

come apparent as the description proceeds are attained by means of a construction and an arrangement of parts that will now be described in detail, and for this purpose reference will be had to the accompanying drawing in which the preferred embodiment of the invention has been'illustrated, and in which:

Figure 1 is a digrammatic representation showing the invention applied to a casement window;

Figure 2 is a top plan view of the control mechanism, parts being broken away and shown in section to better disclose the construction;

.Figure 3 is a front elevation thereof; Figure 4 is a section taken on line 44, Figure 2;

* :Figure 5 is a view partly in section and partly in .top plan taken on line 55 Figure 3; v

Figure 6 is a fragmentary view showing a spring applied to a casement window to exert a closing force thereon;

Figure 7 is an end view looking in the direction of arrow 1, Figure 2;

, Figure 8 is a fragmentary sectional view similar 'by means of screws 27; tothe outer end of trunnion 25 and serves asa 'n'ieansfOr turning the v'ided' at one endi with an opening 30 for the reception of an eccentric is movedaboutits ,UNIT ED STATES PATENT. OFFICE :gwnvDoWoPERATon 7 n p Ulricli J. Fregeau,.l)env er, Colo.

Application September 12, 1940, saw

" whims. (o1. z6s-- 119)- jtof'thatshown in tion of the parts operative position; N Figure 9 is. a diagrammaticview showing the invention applied to an ordinary vertical, slidable window;.and f iFig ure 10 is a fragmentary top plan view of a modified form'ofarmature. l

In the drawing referencenumeral l l designates the lower surface of a window opening and reference J2 the lowerrail of a casement window framel'Ihe casement windows I3 is connected with the vertical casement frame member M by means of 'a hinge [5; A spring I6 is provided "its ends contacting the sash I 3 and the casement frame member M; The spring is so tensioned that it exerts a biasing force onthe sash tending to move it to'closed position.

Secured' to th casement rail I2 is a sash operatingdevice comprising a housing ll having a chamber'i8. *I'his housing is preferably cast and'is provided withends 9 and an outer wall "20. Feet 2] extendbeyond the end walls l9 and 23 ofa wormidfThe, worm is provided with another trunnion 25 that is journaled in a removable partlzfitwhi ch is secured to the housing A handle 28 is attached screw. An arm 29 is pro- 7 r V a pivot 3|. This pivot is provided with cylindrical extensions 32 and 33 that are positioned eccentrically with respect to the pivot 31 and the extension 33 is iournaled in a bearing 3 4 in the lower wall of the housing while the extension 32 is journaled in a bushing -35. '1 he bushing 35must be at least as large in diameter as the eccentric and is removable to permit the latter to be inserted and removed during thema'nufacture and assembly of the device. spur gear-3B is nonrotatably, connected with the upperend ofthe shaft or projection 32. The 'arm'29 has its pivot end provided with a gear segment 31 which cooperates with the worm so fas' to' form a worm gear, byvmeans of which the arm 29 can be rotated about theeccentric pivot whenever the crank 28 is operated to rotate the w rm; "I'he free end of arm 29 is slidably connected with the window sash at, 28 and. therefore whenever the wormjis rotated, the window sash pivot. The worm gear serves purpose some time before they ordinarily would do so, thereby allowing them an uninterrupted nights rest.

Having described the invention what is claimed as new is:

1. A casement window operator for use in adjusting the position of a hinged window sash in a window opening, comprising a housing having means whereby it may be joined to the lower rail of the casement frame, an eccentric pivot rotatably mounted in the housing, a window sash engaging arm having one end provided with a bearing for the reception of the pivot, a gear segment on the pivoted end of the arm, a worm rotatably mounted in the housing, the worm and gear segment being in mesh when the eccentric pivot is in one position and out of mesh when the pivot is rotated to another position, and means comprising an armature operatively connected with the pivot, and an electromagnet operatively associated with the armature for moving the same, a rack connected with the armature and a pinion connected with the pivot, the rack and pinion cooperating to produce a partial rotation of the pivot when the armature is attracted by the electromagnet.

2. A mechanism for adjusting the position of and for releasing a pivoted casement window sash biased in one direction by a spring, said mecha-' nism comprising, a housing having a chamber, a worm positioned in the chamber and mounted for rotation, the top and the bottom of the housing having axially aligned openings forming bearings, a pivot journaled in the bearings, that portion of the pivot positioned within the chamber being eccentric with respect to the journals, a sash engaging arm positioned with one endin the chamber, said end having an opening forming a bearing for the eccentric portion of the pivot, said end being also provided with a gear segment concentric with the bearing for cooperative engagement with the worm, the eccentricity of the pivot being greater than the depth of the gear teeth whereby the latter may be moved into and out of engagement with the Worm by a rotary movement of the pivot in the bearings, means comprising an electromagnet and an armature for turning the pivot to disengage the worm gear members, and means positioned outside of the housing and comprising a handle attached to the pivot for turning it to return the worm gear members to operative engagement.

3. A mechanism for use in adjusting and for releasing a pivoted window sash biased in one direction by a spring, comprising a housing havout of bed for this sole 3 ing a chamber, a worm positioned in the chamber and mounted for rotation, the top and the bottom of the housing having axially aligned openings forming bearings, a pivot journaled in the bearings, that portion of the pivot positioned within the chamber being eccentric with respect to the journals, a sash engaging arm positioned with one end in the chamber, said end having an opening forming a bearing for the eccentric portion of the pivot, said end being also provided with a gear segment concentric with the bearing, for cooperative engagement with the worm, the eccentricity of th pivot being greater than the depth of the gear teeth whereby the latter may be moved into and out of engagement with the worm by a rotary movement of the pivot in the bearings, and means for turning the pivot in a direction to release the arm from the worm, comprising a pinion attached to the pivot, a rack operatively mounted on the housing for reciprocatory movement, the rack and pinion being in mesh, an armature attached to one end of the rack, and an electromagnet associated with the armature whereby when the electromagnet is energized, the pivot will be turned in a direction to disconnect the worm gear.

4. A mechanism for use in adjusting and releasing a pivoted casement window sash biased in one direction by a spring, comprising a housing having a chamber, a worm positioned in the chamber and mounted for rotation, the top and the bottom of the housing having axially aligned openings forming bearings, a pivot journaled in the bearings, that portion of the pivot positioned within the chamber being eccentric with respect to the journals, the bearing in the top being of a greater diameter than the eccentric portion of the pivot, a sash engaging arm positioned with one end in the chamber, said end having an opening forming a bearing for the eccentric portion of the pivot, said end being also provided with a gear segment concentric with the bearing, for cooperative ngagement with the worm, the eccentricity of the pivot being greater than the depth of the gear teeth whereby the latter may be moved into and out of engagement with the worm by a rotary movement of the pivot in the bearings, means comprising an electromagnetic mechanism operatively associated with the pivot for turning it to disengage the worm gear members, and means positioned outside of the housing and comprising a handle attached to the pivot for turning it to return the worm gear members to operative engagement.

ULRICH J. FREGEAU.

Oct. 21., 1941. P. E. FUCHS MATCH COVER Filed Feb 9. 1940 9 v I lm entarw- PAUL FUCHS Attorneys 1 

